I found this code and it seems to work. I installed SWFtools and updated the shared directory that will hold simpleviewer - to version 2.0. I pasted the code below into a new drupal 6 page. I used a photoshop plugin to make the XML and to format the images/thumbs. It worked really well! I used the simpleviewer 1.9 CS3 plugin for photoshop because I was having a hard time getting the height of images to work correctly. The 2.0 version always made all images the same height-width ratio. I hope this helps you!
There are 3 parts to this:
1. The directory where you have your images, pointing to the gallery.xml file.
2. The directory where you have the simpleviewer player (1.9 and 2.0 could be referenced here. Note that 1.9 is called viewer.swf).
3. The configuration for the thumbs, background color and display of the SWF gallery.
4. You'll need to enable the use of PHP code for your drupal pages to get this to work.
This was the simplest and most elegant solution I could find. Worked great!
'methods' => array(
'player' => 'simpleviewer',
'action' => 'swftools_image_display_list',
'swftools_player_path' => 'http://yourwebsite.com/sites/all/module … viewer.swf'
'params' => array(
'height' => 650,
'width' => 650,
'bgcolor' => '#9fc1e4',
'base' => 'http://yoursite.com/images/living_room_simple/thumbs'